/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package ai.h2o.sparkling.api.generation.common

import water.api.API

trait MetricResolver {
  def resolveMetrics(substitutionContext: ModelMetricsSubstitutionContext): Seq[Metric] = {
    val h2oSchemaClass: Class[_] = substitutionContext.h2oSchemaClass

    val parameters =
      for (field <- h2oSchemaClass.getDeclaredFields
           if field.getAnnotation(classOf[API]) != null
           if !MetricFieldExceptions.ignored().contains(field.getName)
           if !substitutionContext.skipFields.contains(field.getName))
        yield {
          val (swFieldName, swMetricName) = MetricNameConverter.convertFromH2OToSW(field.getName)
          Metric(swFieldName, swMetricName, field.getName, field.getType, field.getAnnotation(classOf[API]).help())
        }
    parameters.toSeq
  }
}
